Is machine learning required for deep learning?
Deep learning is part of machine learning.


You will miss out useful information if you ignore machine learning.
You are ok to start your work in machine learning with deep learning and neural networks. You have to start somewhere and starting with a strong and successful method is resaonable, especially if you need to be able to produce good results quickly.
You will learn essential machine learning stuff while reading about deep learning.
The deep learning tutorials and other learning materials you will be reading may not be telling you that what you are learning also applies to other machine learning methods but you will be learning lot's of stuff that applies more generally. You will be studying some machine learning whether you want to or not.
If you have plenty of time a more broad view will help understanding. Still, there is no need to wait with deep learning to after mastering some other methods.
Broader knowledge helps you to relate and memorise concepts and be more aware of potential issues, especially issues that are rarely discussed in the deep learning community. Such knowledge and experience will be most useful when trying to apply deep learning to new problems or if trying to make substantial changes.